JP6731239B2 - Erase tool and eraser with writing tool - Google Patents

Description

The present invention relates to an erasing tool and erasing tool with a writing tool that are effective for erasing drawn lines written in a plurality of widths.

Conventionally, an erasing tool capable of erasing and discoloring two types of writing lines having a wide width and a thin width has been disclosed (see Patent Documents 1 and 2).

JP, 2013-95013, A JP, 2014-177053, A

However, in the techniques disclosed in Patent Documents 1 and 2, it is necessary to determine the handle direction of the barrel when switching the width, but it is not easy to determine the direction.

Therefore, the present invention provides an erasing tool and a erasing tool with a writing tool that can erase and change the color of a writing line having a plurality of widths and can easily select and erase a drawing line having a plurality of thicknesses.

The present invention provides an eraser capable of erasing a writing line,
The erasing tool is characterized in that the erasing section is formed in a polygonal shape, and the barrel having the erasing section mounted therein has a similar shape to the erasing section.

In the present invention, it is preferable that the erasing portion is attached to the holding portion that has a visible transparency.

The present invention is the erasing instrument with a writing instrument, characterized in that the erasing part is provided at one end of the barrel and the writing part capable of writing is provided at the other end of the barrel.

According to the erasing tool and the erasing tool with a writing instrument of the present invention, since the erasing portion is formed in a polygonal shape, it is possible to erase and discolor the writing lines of a plurality of widths by selectively using each side. Since the shaft cylinder to which the erasing unit is attached has a shape similar to that of the erasing unit, the surface connected to each side of the polygon of the shaft cylinder is viewed from the outside, and each side of the erasing unit similar to it is appropriately selected. Therefore, it is possible to provide an excellent effect that it is possible to provide an erasing tool and an erasing tool with a writing tool that can easily select a side having an appropriate length from a plurality of sides having different lengths and erase the writing line.
In the erasing instrument with a writing instrument, it is preferable to provide the erasing portion with a side having an erasing width larger than the line width of the writing instrument because erasing of handwriting can be facilitated.

It is explanatory drawing of the eraser which concerns on 1st Embodiment of this invention, (a) is a perspective view from the front, (b) is sectional drawing which follows the BB line of (e), (c) is the front. Of FIG. 7, (d) is a side view of the state rotated from the state of (c) by 90°, (e) is a side view of the state of (c), (f) is a perspective view from the rear, (g) ) Is a view from the rear. It is explanatory drawing of the eraser which concerns on 2nd Embodiment of this invention, (a) is a perspective view from the front, (b) is sectional drawing which follows the BB line of (e), (c) is the front. Of FIG. 7, (d) is a side view of the state rotated from the state of (c) by 90°, (e) is a side view of the state of (c), (f) is a perspective view from the rear, (g) ) Is a view from the rear. It is explanatory drawing of the eraser with a writing instrument which concerns on 3rd Embodiment which combined the writing instrument with 2nd Embodiment, (a) is a perspective view from the front (erasing part side), (b) is a side view, (c). 6B is a side view of the state of being rotated by 90° from the state of FIG. 9B, and FIG. 9D is a perspective view from the rear side (writing portion side).

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an erasing tool according to the first embodiment.
As shown in FIG. 1, the erasing tool according to the first embodiment can erase writings of three or more types of line widths by the erasing unit 10.

Specifically, the erasing unit 10 has a modified hexagonal rod shape of a deformed hexagon in which the lengths (widths) of a pair of sides are the same and the lengths of adjacent sides are different, and writing (drawing lines, handwriting, etc.) In the erasing, the erasing tool 12 can be erased by applying one of the sides of the erasing section 10 to the writing surface to make the line width different.

In the eraser 12, the eraser 10 is attached to the retainer 16 at the tip end (tip 14a) of the barrel 14 formed in a deformed hexagonal shape (example of polygonal shape) having a cross-sectional shape similar to that of the eraser 10. Are installed through.

Further, the erasing portion 10 is attached and fixed to the tip of a holding portion 16 which is visibly transparent and is long in the axial direction, and the erasing portion 10 is formed in the same cross-sectional shape as a hexagonal shape different from the holding portion 16. Has been done.

FIG. 2 shows an eraser according to the second embodiment.

In the erasing tool 12 according to the second embodiment, the erasing portion 10 is formed to be long in the axial direction and does not have the holding portion 16 as described above, and the axial erasing portion 10 is provided at the tip (tip portion 14a) of the barrel 14. It is installed and fixed.
Since the erasing unit 10 according to the first embodiment has a larger volume as compared with the case where the holding unit of the first embodiment is provided, even if the erasing unit 10 is reduced by use, the volume is large, so It is longer than the ones and many erases are possible.

[Common to Embodiments]
In the erasing tools according to the first and second embodiments, although the cap is not shown in FIGS. 1 and 2, by attaching the cap to the tip of the barrel 14, the erasing part 10 having many erasing parts can be cleaned. Can be prevented.

As shown in FIGS. 1 and 2, the erasing unit 10 has a polygonal shape such as a hexagonal shape, and allows a plurality of drawing lines to be selected and drawn. Multiple lines can be erased with one line.

Then, as shown in FIG. 1 and FIG. 2, the cross-sectional shape of the erasing portion 10 can be a polygonal shape having a plurality of angles such as a triangle, a hexagon or the like.

Further, it is preferable that the cross-sectional shape is “type of writing width×2” and that sides having the same writing width are parallel to each other. For example, in FIG. 1B, sides having the same writing width are indicated by reference numerals 10a, 10b, and 10c. In the erasing tools of the first and second embodiments, the shape of the barrel 14 is also the same. In FIG. 1C, reference numerals 141, 142 and 143 indicate sides having the same width on the outer surface of the barrel 14. Therefore, referring to FIGS. 1B and 1C, the sides 10 a, 10 b, and 10 c of the erasing unit 10 correspond to the sides 141, 142, and 143 of the barrel 14, and the erasing unit 10 is a shaft. Is it understood that it is similar to the cylinder 14?

The holding portion 16 of the first embodiment preferably has the same cross section as the erasing portion 10. Further, the holding portion 16 is preferably formed of a highly transparent material such as acrylic, ABS, or glass so that the erasing portion 10 can be easily visually recognized.

Characters and numbers for recognizing the erase width may be added to the surface of the barrel 14.

Further, the end portion of the shaft tube 14 has a tubular small diameter (tip portion 14a), in which the erasing portion 10 is held in the first embodiment and the holding portion 16 is held in the second embodiment. There is.

The material of the erasing part 10 of the erasing tool 12 can be erased by a frictional action with a paper surface and the like. A rubber elastic material such as a thermoplastic elastomer such as a system elastomer, a mixture of two or more rubber elastic materials, and a mixture of a rubber elastic material and a synthetic resin. In particular, it is formed from a mixture of polypropylene resin and styrene-based thermoplastic elastomer, or a mixture of polypropylene resin and polypropylene-based thermoplastic elastomer, and their compounding ratio is 1:1 to 1:4 by weight, respectively, and an abrasive and a plasticizer. , Made of a material containing no filler and having a durometer hardness A of 70° to 100° specified in JIS K6251 and having a pencil drawing line erasing ability (erasing rate) of 70% specified in JIS S 6050-2002. Low-wear rubber-elastic materials that do not contain plasticizers that are suitable are:

The low wear property mentioned here is formed from a material showing that the amount of taper wear in JIS K7204 test method H22 is less than 15 mg. As a result, the erased portion is less likely to produce erased dust when scratched.

FIG. 3 shows an eraser with a writing implement according to the third embodiment.
In the third embodiment, the eraser with a writing instrument is provided with the erasing section 10 according to the first and second embodiments at one end when viewed in the axial direction and the writing section 18 capable of writing at the other end. The erasing section 10 is fixed to the barrel 14 as in the second embodiment, but the erasing section 10 may be provided at the tip of the holding section 16 as in the first embodiment. Further, in the third embodiment, the same parts as those in the first and second embodiments are designated by the same reference numerals.

The erasing unit 10 may complementarily color the ink color of the writing instrument (writing unit 18) to be substantially the same as the ink color or have a lower lightness than the ink color (black is preferable) to facilitate visual recognition.

The writing unit 18 can be a unit for applying ink by inductively impregnating a polygonal pen core with ink and for writing.
In addition, the writing unit 18 may be provided at the tip of the holding unit and have an ink guiding tube in the holding unit as in the first embodiment. It is preferable to arrange it at the axis center of.

The pen core of the writing unit 18 has a marking pen core such as a sintered body or a fiber bundle.

Further, the erasing unit 10 is preferable because the erasing width becomes larger than the corresponding handwriting width by making the cross-sectional shape similar to the writing unit 18 and larger than the writing unit 18.

The ink contained in the writing instrument (such as the ink tank 14b in the barrel 14) is a thermal ink composition for a writing instrument containing at least a leuco dye, a color developer, and color developing particles made of a crystalline substance as a colorant. Further, in addition to the colorant, it further comprises a color erasing agent composed of an amorphous resin having a glass transition temperature (Tg) of 30 to 90° C. Ink) compositions are preferred.

The above is a heat-sensitive ink that can be erased by friction heat or the like, but an eraser-erasable ink that can be erased by rubbing an eraser or the like may be used.

It should be noted that the present invention is not limited to the above embodiment, and can be modified within the scope of the present invention. For example, the erasing portion and the shaft cylinder are not limited to the irregular hexagonal cross section, and may have an irregular triangular cross section, a quadrangle, a pentagon or a heptagon. Although each side may or may not include a side having the same length, it is preferable that all sides have different lengths because handwriting with various widths can be written and erased.

In the erasing tool and the erasing tool with a writing instrument of the present invention, since the erasing section has a polygonal shape, it is possible to erase and change the color of a writing line of a plurality of widths by selectively using each side, and the shaft cylinder serves as the erasing section. Since the shapes are similar to each other, it can be used as an erasing tool and a erasing tool with a writing tool that can easily select and erase lines having a plurality of thicknesses.

10 erasing section 12 erasing tool 14 barrel 16 holding section 18 writing section

Claims (1)

In a writing instrument with an erasing tool that can erase the writing line,
In the erasing tool, the erasing portion is formed in a polygonal shape, the barrel having the erasing portion attached has a similar shape to the erasing portion, and the erasing portion has a durometer hardness A defined by JIS K6251 of 70° to 100°. Rubber elastic material having a taper wear amount of less than 15 mg according to JIS K7204 test method H22 that does not contain a plasticizer and has a pencil drawing line erasure rate of 70% or less specified in JIS S 6050-2002. And all sides have different lengths, are attached to a visible and transparent holding part, and are provided at one end of the barrel,
The other end of the barrel is provided with a writing unit that is capable of writing with a thermal ink and is similar to the erasing unit and smaller than the erasing unit, and the erasing unit is a color having a lower lightness than the ink color of the writing unit. A writing instrument equipped with an eraser for heat-sensitive ink, which is characterized in that it is complementarily colored.

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